INFO: task hung in gfs2_gl_hash

Kernel	Title	Repro	Cause bisect	Fix bisect	Count	Last	Reported	Patched	Status
upstream	INFO: task hung in gfs2_gl_hash_clear gfs2				156	1266d	1271d	0/26	auto-closed as invalid on 2021/02/02 22:47
linux-5.15	INFO: task hung in gfs2_gl_hash_clear origin:lts-only	C		inconclusive	261	7m	267d	0/3	upstream: reported C repro on 2023/08/01 02:35
linux-6.1	INFO: task hung in gfs2_gl_hash_clear missing-backport origin:lts-only	C		done	366	now	254d	0/3	upstream: reported C repro on 2023/08/13 12:57
linux-4.19	INFO: task hung in gfs2_gl_hash_clear gfs2				1	476d	476d	0/1	upstream: reported on 2023/01/04 01:01
upstream	INFO: task can't die in gfs2_gl_hash_clear (2) gfs2				3	1098d	1192d	0/26	auto-closed as invalid on 2021/07/21 03:15
upstream	INFO: task hung in gfs2_gl_hash_clear (3) gfs2	C	error	done	80	123d	511d	26/26	fixed on 2024/01/30 15:47

INFO: task syz-executor.1:7605 blocked for more than 143 seconds. Not tainted 5.19.0-rc1-syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:syz-executor.1 state:D stack:26080 pid: 7605 ppid: 3643 flags:0x00004004 Call Trace: <TASK> context_switch kernel/sched/core.c:5116 [inline] __schedule+0xa00/0x4b30 kernel/sched/core.c:6428 schedule+0xd2/0x1f0 kernel/sched/core.c:6500 schedule_timeout+0x14a/0x2a0 kernel/time/timer.c:1935 gfs2_gl_hash_clear+0x243/0x270 fs/gfs2/glock.c:2242 gfs2_fill_super+0x2101/0x28a0 fs/gfs2/ops_fstype.c:1302 get_tree_bdev+0x440/0x760 fs/super.c:1292 gfs2_get_tree+0x4a/0x270 fs/gfs2/ops_fstype.c:1325 vfs_get_tree+0x89/0x2f0 fs/super.c:1497 do_new_mount fs/namespace.c:3040 [inline] path_mount+0x1320/0x1fa0 fs/namespace.c:3370 do_mount fs/namespace.c:3383 [inline] __do_sys_mount fs/namespace.c:3591 [inline] __se_sys_mount fs/namespace.c:3568 [inline] __x64_sys_mount+0x27f/0x300 fs/namespace.c:3568 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x35/0xb0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x46/0xb0 RIP: 0033:0x7fc61c28a63a RSP: 002b:00007fc61d30df88 EFLAGS: 00000206 ORIG_RAX: 00000000000000a5 RAX: ffffffffffffffda RBX: 0000000020000200 RCX: 00007fc61c28a63a RDX: 0000000020000000 RSI: 0000000020000100 RDI: 00007fc61d30dfe0 RBP: 00007fc61d30e020 R08: 00007fc61d30e020 R09: 0000000020000000 R10: 0000000000000000 R11: 0000000000000206 R12: 0000000020000000 R13: 0000000020000100 R14: 00007fc61d30dfe0 R15: 0000000020047a20 </TASK> Showing all locks held in the system: 1 lock held by khungtaskd/28: #0: ffffffff8bd866e0 (rcu_read_lock){....}-{1:2}, at: debug_show_all_locks+0x53/0x260 kernel/locking/lockdep.c:6491 1 lock held by hwrng/752: #0: ffffffff8c832908 (reading_mutex){+.+.}-{3:3}, at: hwrng_fillfn+0x141/0x370 drivers/char/hw_random/core.c:503 1 lock held by klogd/2966: 2 locks held by getty/3293: #0: ffff888026197098 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x22/0x80 drivers/tty/tty_ldisc.c:244 #1: ffffc90002cd62e8 (&ldata->atomic_read_lock){+.+.}-{3:3}, at: n_tty_read+0xe50/0x13c0 drivers/tty/n_tty.c:2124 1 lock held by syz-executor.1/7605: #0: ffff88807843a0e0 (&type->s_umount_key#58/1){+.+.}-{3:3}, at: alloc_super+0x1dd/0xa80 fs/super.c:228 ============================================= NMI backtrace for cpu 1 CPU: 1 PID: 28 Comm: khungtaskd Not tainted 5.19.0-rc1-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Call Trace: <TASK> __dump_stack lib/dump_stack.c:88 [inline] dump_stack_lvl+0xcd/0x134 lib/dump_stack.c:106 nmi_cpu_backtrace.cold+0x47/0x144 lib/nmi_backtrace.c:111 nmi_trigger_cpumask_backtrace+0x1e6/0x230 lib/nmi_backtrace.c:62 trigger_all_cpu_backtrace include/linux/nmi.h:146 [inline] check_hung_uninterruptible_tasks kernel/hung_task.c:220 [inline] watchdog+0xc22/0xf90 kernel/hung_task.c:378 kthread+0x2e9/0x3a0 kernel/kthread.c:376 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:302 </TASK> Sending NMI from CPU 1 to CPUs 0: NMI backtrace for cpu 0 CPU: 0 PID: 2966 Comm: klogd Not tainted 5.19.0-rc1-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 RIP: 0010:compaction_capture mm/page_alloc.c:890 [inline] RIP: 0010:__free_one_page+0x16b/0x1200 mm/page_alloc.c:1042 Code: 0f 87 91 01 00 00 44 89 f0 48 8b 4c 24 10 45 89 f5 49 89 de 48 6b c0 68 49 bf 00 00 00 00 00 fc ff df 4c 8d a4 01 a0 01 00 00 <48> 8b 04 24 48 c1 e8 03 4c 01 f8 48 89 44 24 30 48 83 3c 24 00 0f RSP: 0018:ffffc90002d1f5d0 EFLAGS: 00000096 RAX: 0000000000000138 RBX: 000000000015e508 RCX: ffff88823fff7e00 RDX: 1ffffffff1b76e45 RSI: 000000000015e508 RDI: ffffffff8dbb7228 RBP: ffffea0005794200 R08: 0000000000140000 R09: 0000000000000000 R10: ffffea0005794200 R11: 0000000000000001 R12: ffff88823fff80d8 R13: 0000000000000003 R14: 000000000015e508 R15: dffffc0000000000 FS: 00007fa7fbe7b800(0000) GS:ffff8880b9a00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 000055e5026147d8 CR3: 000000007e04c000 CR4: 0000000000350ef0 Call Trace: <TASK> free_pcppages_bulk+0x311/0x690 mm/page_alloc.c:1524 free_unref_page_commit+0x5fb/0x900 mm/page_alloc.c:3425 free_unref_page+0x270/0x6a0 mm/page_alloc.c:3458 __unfreeze_partials+0x17c/0x1a0 mm/slub.c:2521 qlink_free mm/kasan/quarantine.c:168 [inline] qlist_free_all+0x6a/0x170 mm/kasan/quarantine.c:187 kasan_quarantine_reduce+0x180/0x200 mm/kasan/quarantine.c:294 __kasan_slab_alloc+0xa2/0xc0 mm/kasan/common.c:446 kasan_slab_alloc include/linux/kasan.h:224 [inline] slab_post_alloc_hook mm/slab.h:750 [inline] slab_alloc_node mm/slub.c:3214 [inline] kmem_cache_alloc_node+0x255/0x3f0 mm/slub.c:3264 __alloc_skb+0x215/0x340 net/core/skbuff.c:414 alloc_skb include/linux/skbuff.h:1426 [inline] alloc_skb_with_frags+0x93/0x730 net/core/skbuff.c:5992 sock_alloc_send_pskb+0x793/0x920 net/core/sock.c:2662 unix_dgram_sendmsg+0x425/0x1ad0 net/unix/af_unix.c:1895 sock_sendmsg_nosec net/socket.c:714 [inline] sock_sendmsg+0xcf/0x120 net/socket.c:734 __sys_sendto+0x21a/0x320 net/socket.c:2119 __do_sys_sendto net/socket.c:2131 [inline] __se_sys_sendto net/socket.c:2127 [inline] __x64_sys_sendto+0xdd/0x1b0 net/socket.c:2127 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x35/0xb0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x46/0xb0 RIP: 0033:0x7fa7fc0170ac Code: 89 02 48 c7 c0 ff ff ff ff eb b8 0f 1f 00 41 89 ca 64 8b 04 25 18 00 00 00 85 c0 75 19 45 31 c9 45 31 c0 b8 2c 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 64 c3 0f 1f 00 55 48 83 ec 20 48 89 54 24 10 RSP: 002b:00007fffb7f78f08 EFLAGS: 00000246 ORIG_RAX: 000000000000002c RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007fa7fc0170ac RDX: 0000000000000055 RSI: 000055672b597ed0 RDI: 0000000000000003 RBP: 000055672b591910 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000004000 R11: 0000000000000246 R12: 0000000000000014 R13: 0000000000000001 R14: 00007fa7fc19277d R15: 00007fffb7f79018 </TASK> ---------------- Code disassembly (best guess): 0: 0f 87 91 01 00 00 ja 0x197 6: 44 89 f0 mov %r14d,%eax 9: 48 8b 4c 24 10 mov 0x10(%rsp),%rcx e: 45 89 f5 mov %r14d,%r13d 11: 49 89 de mov %rbx,%r14 14: 48 6b c0 68 imul $0x68,%rax,%rax 18: 49 bf 00 00 00 00 00 movabs $0xdffffc0000000000,%r15 1f: fc ff df 22: 4c 8d a4 01 a0 01 00 lea 0x1a0(%rcx,%rax,1),%r12 29: 00 * 2a: 48 8b 04 24 mov (%rsp),%rax <-- trapping instruction 2e: 48 c1 e8 03 shr $0x3,%rax 32: 4c 01 f8 add %r15,%rax 35: 48 89 44 24 30 mov %rax,0x30(%rsp) 3a: 48 83 3c 24 00 cmpq $0x0,(%rsp) 3f: 0f .byte 0xf